Computer Generated Realistic Interstellar Icy Grain Models: Physicochemical Properties and Interaction with NH₃.

ABSTRACT: Interstellar grains are composed by a rocky core (usually amorphous silicates) covered by an icy mantle, the most abundant molecule being H₂O followed by CO, CO₂, NH₃, and also radicals in minor quantities. In dense molecular clouds, gas-phase chemical species freeze onto the grain surface, making it an important reservoir of molecular diversity/complexity whose evolution leads to interstellar complex organic molecules (iCOMs). Many different models of water clusters have appeared in the literature, but without a systematic study on the properties of the grain (such as the H-bonds features, the oxygen radial distribution function, the dangling species present on the mantle surface, the surface electrostatic potential, etc.). In this work, we present a compu

SUBMITTER: Germain A 

PROVIDER: S-EPMC9125691 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature